/*
 * Copyright 2006-2023 www.anyline.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.anyline.util;

import org.anyline.util.encrypt.MD5Util;

public class MixUtil {

    public static String mix(String seed, String origin){
        return mix(seed, 6, 8, origin);
    }
    public static String mix(String origin){
        return mix(ConfigTable.MIX_DEFAULT_SEED, 6, 8, origin);
    }
    public static String mix(String seed, int begin, int end, String origin){
        if(BasicUtil.isEmpty(origin)){
            return null;
        }
        String md5 = MD5Util.crypto(origin);
        String result = MD5Util.crypto(seed + md5.substring(begin) + origin).substring(begin, end);
        return result;
    }

    /**
     *
     * @param verify 验证码
     * @param seed 加密种子
     * @param origin 源
     * @return boolean
     */
    public static boolean verify(String verify, String seed, String origin){
        return verify(verify, seed, 6, 8, origin);
    }
    public static boolean verify(String verify, String origin){
        return verify(verify,ConfigTable.MIX_DEFAULT_SEED, 6, 8, origin);
    }
    public static boolean verify(String verify, String seed, int begin, int end, String origin){
        String result = MD5Util.crypto(seed + MD5Util.crypto(origin).substring(begin) + origin).substring(begin, end);
        return result.equals(verify);
    }
}
